Child welfare advocates want to know why it took almost a full day before family members of a toddler left at a Houston flea market finally came forward.

The 17-month-old was placed with his grandparents Monday evening, several hours after Child Protective Services sought the public's help to identify the boy who was spotted about 5:30 p.m. Sunday in the parking lot at Trader's Village Flea Market, 7979 Eldridge Parkway.